在数学教学中通过创设问题情境可以引导学生识图,捕捉信息,促使学生去质疑问难、探索求解,启发学生思考。因此,教师有目的、有意识地创设各种问题情境,精心做好课堂预设,如提供学习材料、动手实践等,使学生面临某个迫切需要解决的现实问题,激起学生的疑惑和强烈的好奇心、求知欲,从而实现数学课堂的有效性。 In mathematics teaching, by creating problem situations, students can be guided to figure out and capture information so as to urge the students to question and answer problems, explore solutions and inspire students' thinking. Therefore, teachers have the purpose, consciously create a variety of problem situations, carefully do classroom pre-setting, such as the provision of learning materials, hands-on practice, so that students are facing an urgent need to solve the real problems, arouse students' doubts and strong Curiosity, curiosity, in order to achieve the effectiveness of mathematics classroom.